Bipolar Separator (e.g., Bipolar Plate, Etc.) Patents (Class 429/518)
  • Patent number: 11398631
    Abstract: Provided are stainless steel for a separator of a polymer electrolyte membrane fuel cell, which exhibits enhanced hydrophilicity and enhanced corrosion resistance, and a method of manufacturing the same. In the stainless steel for a separator of a polymer electrolyte membrane fuel cell, which exhibits enhanced hydrophilicity and enhanced corrosion resistance, according to an embodiment of the present invention, a ratio of Cr hydroxide/Cr oxide included in a passivation film of the stainless steel ranges from 0.5 to 1.7, and the passivation film has a contact angle (?) of 70° or less. Thus, not only corrosion resistance may be enhanced by removing a non-conductive film formed on a surface of the stainless steel and forming a new conductive film thereon, but hydrophilicity may also be secured without additional surface treatment such as a separate coating or the like, and thus manufacturing costs may be reduced and productivity may be increased.
    Type: Grant
    Filed: December 16, 2016
    Date of Patent: July 26, 2022
    Assignee: POSCO
    Inventors: Jong Hee Kim, Kwang Min Kim, Ki Hoon Jo, Bo Sung Seo
  • Patent number: 11380908
    Abstract: A coating for a bipolar plate of a fuel cell or an electrolyzer contains a homogeneous or heterogeneous solid metal solution. The coating contains at least 15% Iridium and up to 84% Ruthenium with a total combined concentration of Iridium and Ruthenium of at least 99% (atomic). The coating also contains at least one of Nitrogen, Carbon, and Flourine. The coating may contain traces of Oxygen or Hydrogen. The coating may be used as part of a layer system that includes one or more undercoat layers and the coating as a covering layer.
    Type: Grant
    Filed: June 11, 2018
    Date of Patent: July 5, 2022
    Assignee: Schaeffler Technologies AG & Co. KG
    Inventors: Ladislaus Dobrenizki, Yashar Musayev, Tim Hosenfeldt, Detlev Repenning
  • Patent number: 11205783
    Abstract: Corrosion-resistant oxide films for use with proton exchange membrane fuel cells are described. Bipolar plates of proton exchange membrane fuel cells are subject to highly-acidic environments that can degrade the bulk material and associated properties of the bipolar plate leading to reduced proton exchange membrane fuel cell lifetimes. Materials, structures, and techniques for increasing the corrosion resistance of bipolar plates are disclosed. Such materials include substrates having a surface portion, which includes an Fe2O3 oxide layer having (110), (012), or (100) Fe2O3 surface facets configured to impart corrosion-resistance properties to the substrate.
    Type: Grant
    Filed: July 31, 2019
    Date of Patent: December 21, 2021
    Assignee: Robert Bosch GmbH
    Inventors: Soo Kim, Mordechai Kornbluth, Jonathan Mailoa, Georgy Samsonidze, Lei Cheng, Sondra Hellstrom, Boris Kozinsky, Nathan Craig
  • Patent number: 10968354
    Abstract: According to the invention, an electrophoretic dispersion liquid includes at least one type of an electrophoretic particle, and a dispersion medium, in which the content of transition metal of group 8 elements derived from a catalyst which is used to generate at least one of a block copolymer (a particle surface treatment agent) used to form the electrophoretic particle and the dispersion medium is in a range of greater than 0 ppm to equal to or less than 2 ppm in the electrophoretic dispersion liquid.
    Type: Grant
    Filed: October 29, 2018
    Date of Patent: April 6, 2021
    Assignee: E Ink Corporation
    Inventors: Harunobu Komatsu, Masahiko Nakazawa, Kiyoshi Nakamura, Hiroki Nakahara
  • Patent number: 10910657
    Abstract: A fuel cell separator having high corrosion resistance even in an environment where fluoride ions are present, which is a fuel cell separator comprising a metal base material, a tin oxide film provided on a surface of the metal base material, and a conductive polymer film provided at least on an area exposed due to a defect present on the tin oxide film on the surface of the metal base material.
    Type: Grant
    Filed: November 28, 2018
    Date of Patent: February 2, 2021
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventor: Satoshi Takata
  • Patent number: 10826079
    Abstract: Provided is a separator for a fuel cell that can suppress a decrease in the power generation performance of the fuel cell by reducing the contact resistance of the separator. Specifically, provided is a separator for a fuel cell, the separator being adapted to be in contact with a MEGA (power generation portion) including a membrane electrode assembly of the fuel cell so as to separate the MEGA from a MEGA of an adjacent fuel cell, the separator including a metal substrate made of metal; and a tin oxide film covering a surface of the metal substrate on the side of the MEGA. The tin oxide film is made of tin oxide containing 1 to 10 atom % of aluminum.
    Type: Grant
    Filed: May 9, 2018
    Date of Patent: November 3, 2020
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Satoshi Takata, Tomonari Kogure
  • Patent number: 10804540
    Abstract: A bipolar plate can include at least one resin selected from the group consisting of acrylonitrile butadiene styrene (ABS), polyphenylsulfone, a polymer resistant to sulfuric acid, and combinations of any thereof. The bipolar plate can further include conductive fibers comprise amount of from about 20% to about 50% by volume.
    Type: Grant
    Filed: August 10, 2015
    Date of Patent: October 13, 2020
    Assignee: PIVOTAL BATTERY CORP
    Inventors: Slobodan Pavlovic, Mo Zeidan
  • Patent number: 10686202
    Abstract: A method is provided for determining a spatial distribution (Rx,yf) of a parameter of interest (R) representative of the electrical power production of an electrochemical cell, including steps of determining the spatial distribution (Rx,yf) the parameter of interest (R) depending on a spatial distribution (Qx,ye) of a second thermal quantity (Qe) estimated beforehand from a spatial distribution (Tx,yc) of a set-point temperature (Tc) and from a spatial distribution (Dx,yr) of a first thermal quantity (Dr).
    Type: Grant
    Filed: September 21, 2016
    Date of Patent: June 16, 2020
    Assignee: Commissariat A L'Energie Atomique et aux Energies Alternatives
    Inventors: Fredy-Intelligent Nandjou Dongmeza, Jean-Philippe Poirot-Crouvezier, Fabrice Micoud, Mathias Gerard, Christophe Robin, Lara Jabbour, Remi Vincent
  • Patent number: 10611130
    Abstract: An extruded matt foil has at least one layer in which glass beads are uniformly distributed in a polymer matrix with at least one fluoropolymer and at least one further layer. The matt foil has a particularly high UV-resistance, a high weathering resistance and excellent mechanical properties. Therefore, the foil is highly suitable for surface-protection of materials such as polyvinyl chloride (PVC) and for use in high-pressure laminates (HPLs).
    Type: Grant
    Filed: December 5, 2017
    Date of Patent: April 7, 2020
    Assignee: Röhm GmbH
    Inventors: Claude Guénanten, Helmut Háring, Detlef Birth, Max Conrad, Eric Reinheimer, Günther Dickhaut, Ghirmay Seyoum, Wangelis Karampougioukis, Girolamo Musci
  • Patent number: 10581087
    Abstract: The invention concerns a fuel cell (100), comprising a stack (1) of alternating bipolar plates (113) and membrane electrode assemblies (114) as well as flow channels (104, 105) that are designed between a bipolar plate (113) and a membrane electrode assembly (114) and flow channels (104, 105) that are designed within a bipolar plate (113) as well as a motor vehicle with such a fuel cell. Provision is made that a surface (101) of at least a part of the flow channels (104, 105) that is overflowable by a fluid has, regarding its direction of extension at least in part a hydrophobic segment (101a) and a hydrophilic segment (101b) with regard to a cross-section of the flow channel (104, 105).
    Type: Grant
    Filed: July 24, 2015
    Date of Patent: March 3, 2020
    Assignee: AUDI AG
    Inventors: Dirk Jenssen, Christian Martin Zillich
  • Patent number: 10497940
    Abstract: The present specification relates to a carrier-nanoparticle complex and a preparation method thereof.
    Type: Grant
    Filed: August 18, 2015
    Date of Patent: December 3, 2019
    Assignee: LG CHEM, LTD.
    Inventors: Sang Hoon Kim, Jun Yeon Cho, Kwanghyun Kim, Jungup Bang, Gyo Hyun Hwang, Ran Choi
  • Patent number: 10388916
    Abstract: An energy storage apparatus including: an energy storage device; an outer covering; electric equipment disposed in the outer covering; and a housing part which houses the electric equipment, wherein a drain passage, which is disposed in a region covered by the electric equipment and through which water is discharged to outside of the region, is formed on a lower wall surface below the electric equipment in the housing part.
    Type: Grant
    Filed: September 9, 2016
    Date of Patent: August 20, 2019
    Assignee: GS YUASA INTERNATIONAL LTD.
    Inventor: Masamitsu Tononishi
  • Patent number: 10276878
    Abstract: A fuel cell flow field plate includes an aluminum substrate plate having a first side and a second side wherein the first side of the aluminum substrate plate defines a plurality of channels for transporting a first fuel cell reactant gas. The flow field plate also includes a first metal interlayer deposited on the first side of the aluminum substrate plate, a second metal interlayer deposited on the second side of the aluminum substrate plate, a first amorphous carbon layer deposited on the first metal interlayer, and a second amorphous carbon layer deposited on the second metal interlayer. The first amorphous carbon layer and second amorphous carbon layer each independently have a density greater than or equal to 1.2 g/cc.
    Type: Grant
    Filed: July 8, 2016
    Date of Patent: April 30, 2019
    Assignee: GM GLOBAL TECHNOLOGY OPERATIONS LLC
    Inventors: Smuruthi Kamepalli, Balasubramanian Lakshmanan, Elizabeth Dicocco
  • Patent number: 10230115
    Abstract: Provided is a metallic material including: a base metal made of a metal; a metal compound layer stacked on a surface of the base metal, the metal compound layer mainly containing a compound of at least one transition metal in the fourth period and oxygen; a platinum group portion dispersed on a surface of the metal compound layer, the platinum group portion mainly containing at least one platinum group element; and a platinum group compound coating film which covers the platinum group portion, the platinum group compound coating film mainly containing a compound of at least one platinum group element and oxygen. The at least one platinum group element contained in the platinum group portion is preferably one or more of Ru, Rh, Os, and Ir.
    Type: Grant
    Filed: August 18, 2015
    Date of Patent: March 12, 2019
    Assignee: NIPPON STEEL & SUMITOMO METAL CORPORATION
    Inventors: Yoshitaka Nishiyama, Junko Imamura, Yasuhiro Masaki, Masanari Kimoto
  • Patent number: 9837670
    Abstract: Systems and methods for sintering and conditioning fuel cell stacks utilizing channel guides, baffles, and internal compression systems are provided. Sintering and conditioning may be performed utilizing a fuel cell column cartridge assembly and fuel cell stacks may be sintered and conditioned at the system level during the same annealing cycle on the same support.
    Type: Grant
    Filed: May 19, 2015
    Date of Patent: December 5, 2017
    Assignee: BLOOM ENERGY CORPORATION
    Inventors: Matthias Gottmann, Nathan Ben Erlin, Kurt Risic, Stephen Couse, David Edmonston
  • Patent number: 9680163
    Abstract: A fuel cell (1) has a plate (2) produced by powder metallurgy which comprises in one piece a porous substrate area (4) to which the electrochemically active cell layers (6) are applied, and a gastight edge area (5) which is provided with gas passages (17, 18).
    Type: Grant
    Filed: May 6, 2008
    Date of Patent: June 13, 2017
    Assignee: PLANSEE SE
    Inventors: Marco Brandner, Thomas Franco, Georg Kunschert, Reinhold Zach, Gebhard Zobl
  • Patent number: 9566729
    Abstract: An insert for a water sports board, wherein the insert includes a pre-preg flange extending outwardly from an injection molded central housing to provide enhance structural properties of the insert, as well as enhanced intermediate bonding between the injection molded central housing and a surface polymer. The pre-preg flange further improves the strength to weight ratio when compared to conventional inserts.
    Type: Grant
    Filed: April 14, 2014
    Date of Patent: February 14, 2017
    Assignee: TODOS SANTOS SURF, INC.
    Inventors: Vince Longo, Tony Longo, John Griffin
  • Patent number: 9147889
    Abstract: The present invention provides a composite separator for a polymer electrolyte membrane fuel cell (PEMFC) and a method for manufacturing the same. The inventive method involves allowing graphite foil layers to be brought into direct contact with each other when graphite foils are stacked on both sides of a carbon fiber reinforced composite material prepreg, thereby improving electrical conductivity in the thickness direction of the separator.
    Type: Grant
    Filed: May 2, 2014
    Date of Patent: September 29, 2015
    Assignees: Hyundai Motor Company, Korea Advanced Institute of Science and Technology
    Inventors: Dai Gil Lee, Ha Na Yu, Byoung Chul Kim, Bu Gi Kim, Jun Woo Lim, Jung Do Suh
  • Patent number: 9130201
    Abstract: A fuel cell comprises a bipolar plate having a cationic polymer layer and a conductive and hydrophilic surface layer disposed on at least a portion of its exterior area. The surface layer comprises a conductive carbon material having a hydrophilic organic group ionically attached to its surface. A process of producing a bipolar plate and a fuel cell is also disclosed.
    Type: Grant
    Filed: July 20, 2009
    Date of Patent: September 8, 2015
    Assignee: GM Global Technology Operations LLC
    Inventors: Richard H. Blunk, Ping Liu, Sky Leigh Van Atta, Kevin W. Kirby
  • Patent number: 9034535
    Abstract: There is provided a flexible circuit board capable of preventing corrosion and elution of a conductor layer constituting a current collector even under high-temperature and high-voltage working conditions while achieving sufficient electric connection with an MEA. A flexible circuit board having a current collector of a fuel cell provided thereon includes an insulating flexible base material 1, a plurality of openings 5 that supply fuel or air, the openings 5 being provided in a specified region so as to penetrate through the flexible base material 1 in a thickness direction, a plating film 6 that constitutes the current collector, the plating film 6 being formed on front and back surfaces of the flexible base material 1 in the specified region and on inner walls of the openings 5, a surface treatment film 9 formed on the plating film 6 and having corrosion resistance higher than that of the plating film.
    Type: Grant
    Filed: February 3, 2012
    Date of Patent: May 19, 2015
    Assignee: NIPPON MEKTRON, LTD
    Inventor: Masanori Hirata
  • Patent number: 9005834
    Abstract: A polymer electrolyte fuel cell comprises a plurality of stacked cells each having an ionic conductive electrolyte membrane, an anode placed on one side of the electrolyte membrane, a cathode placed on the other side of the electrolyte membrane, and a conductive separator on which a first refrigerant channel for flow of a refrigerant is formed in center part thereof. The separator comprises penetration holes constituting a manifold which extend in a direction of stacking of the plurality of cells and through which the refrigerant flows and second refrigerant channels for communication between the penetration holes and the first refrigerant channel. A plurality of protrusions that protrude into the penetration holes from parts of wall surfaces of the penetration holes that are located peripherally in connection parts between the penetration holes and the second refrigerant channels.
    Type: Grant
    Filed: February 10, 2012
    Date of Patent: April 14, 2015
    Assignee: Panasonic Intellectual Property Management Co., Ltd.
    Inventors: Mitsuo Yoshimura, Hirokazu Honkawa, Kenji Arai
  • Patent number: 9005835
    Abstract: This disclosure related to polymer electrolyte member fuel cells and components thereof.
    Type: Grant
    Filed: June 22, 2009
    Date of Patent: April 14, 2015
    Assignee: Nuvera Fuel Cells, Inc.
    Inventors: Scott C. Blanchet, Amedeo Conti, James C. Cross, III
  • Patent number: 8999604
    Abstract: The oriented amorphous carbon film contains C as a main component, 3 to 20 at. % of N, and more than 0 at. % and not more than 20 at. % of H, and when the total amount of the C is taken as 100 at. %, the amount of C having an sp2 hybrid orbital (Csp2) being not less than 70 at. % and less than 100 at. %, and (002) planes of graphite being oriented along a thickness direction. This film has a novel structure and exhibits a high electric conductivity. This film can be formed by DC plasma CVD method in which an electric discharge is generated by applying a voltage of not less than 1500 V to reaction gas including at least one kind of compound gas selected from gas of a carbocyclic compound containing Csp2 and gas of an N-containing heterocyclic compound containing Csp2, and nitrogen and/or silicon, and nitrogen gas.
    Type: Grant
    Filed: December 24, 2010
    Date of Patent: April 7, 2015
    Assignee: Kabushiki Kaisha Toyota Chuo Kenkyusho
    Inventors: Takashi Iseki, Yuka Yamada, Kazuyuki Nakanishi, Yasuhiro Ozawa, Shingo Ohta
  • Patent number: 8999607
    Abstract: A compact of a support-member divided-member, which has a shape formed by dividing a support member into two in the thickness direction so as to divide the fuel channel into two in the thickness direction, is manufactured by a gel cast method in which slurry is filled in a molding die. A compact of a fuel-side electrode and a compact of an electrolyte are successively stacked on the upper surface of the compact of the support-member divided-member, whereby a compact of a cell divided member is obtained. The two compacts of the cell divided member are bonded and sintered, whereby an SOFC cell (sintered body) in which an oxygen-side electrode is not formed is formed. A compact of the oxygen-side electrode is formed respectively on the upper and lower surfaces of the sintered body, and then, the compact of the oxygen-side electrode is sintered, whereby the SOFC cell is completed.
    Type: Grant
    Filed: December 3, 2010
    Date of Patent: April 7, 2015
    Assignee: NGK Insulators, Ltd.
    Inventors: Takuji Kimura, Kunihiko Yoshioka, Makoto Ohmori
  • Patent number: 8980501
    Abstract: A first metal separator and an electrolyte electrode assembly are stacked in a fuel cell. The first metal separator comprises a convex portion that abuts against the electrolyte electrode assembly, and a concave portion forming an oxygen-containing gas flow channel between the electrolyte electrode assembly and the concave portion. A gold coating layer is formed on the convex portion. The gold coating layer includes a main gold coating portion and a reticulate gold coating portion that extends around the main gold coating portion.
    Type: Grant
    Filed: April 4, 2012
    Date of Patent: March 17, 2015
    Assignee: Honda Motor Co., Ltd.
    Inventors: Masao Utsunomiya, Teruyuki Ohtani, Toshiki Kawamura
  • Patent number: 8968958
    Abstract: A fuel cell system includes a plurality of fuel cell stacks, and one or more devices which in operation of the system provide an azimuthal direction to one or more anode or cathode feed or exhaust fluid flows in the system.
    Type: Grant
    Filed: July 2, 2009
    Date of Patent: March 3, 2015
    Assignee: Bloom Energy Corporation
    Inventors: Matthias Gottmann, Martin Perry
  • Patent number: 8962219
    Abstract: An interconnect for a fuel cell stack includes a first plurality of ribs extending from a first major surface of the interconnect and defining a first plurality of gas flow channels between the ribs, the ribs extending between a first rib end and a second rib end and having a tapered profile in a vertical dimension, perpendicular to the first major surface of the interconnect, proximate at least one of the first rib end and the second rib end, wherein the ribs comprise a flat upper surface and rounded edges between the flat upper surface and the adjacent gas flow channels, the rounded edges having a first radius of curvature, and wherein the gas flow channels comprise a rounded surface having a second radius of curvature, different from the first radius of curvature.
    Type: Grant
    Filed: November 16, 2012
    Date of Patent: February 24, 2015
    Assignee: Bloom Energy Corporation
    Inventors: Stephen Couse, Daniel Darga, Harald Herchen, Chockkalingam Karuppaiah
  • Patent number: 8956767
    Abstract: The present invention provides a composite separator for a polymer electrolyte membrane fuel cell (PEMFC) and a method for manufacturing the same, in which a graphite foil prepared by compressing expanded graphite is stacked on a carbon fiber-reinforced composite prepreg or a mixed solution prepared by mixing graphite flake and powder with a resin solvent is applied to the cured composite prepreg such that a graphite layer is integrally molded on the outermost end of the separator.
    Type: Grant
    Filed: June 25, 2010
    Date of Patent: February 17, 2015
    Inventors: Dai Gil Lee, Ha Na Yu, Jun Woo Lim, Sae Hoon Kim, Jung Do Suh, Byung Ki Ahn
  • Patent number: 8956785
    Abstract: A flow field plate for fuel cell applications includes a metal with a non-crystalline carbon layer disposed over at least a portion of the metal plate. The non-crystalline carbon layer includes an activated surface which is hydrophilic. Moreover, the flow field plate is included in a fuel cell with a minimal increase in contact resistance. Methods for forming the flow field plates are also provided.
    Type: Grant
    Filed: July 17, 2013
    Date of Patent: February 17, 2015
    Assignee: GM Global Technology Operations LLC
    Inventors: Gayatri Vyas Dadheech, Thomas A. Trabold, Youssef M. Mikhail, Mahmoud H. Abd Elhamid
  • Publication number: 20150037710
    Abstract: The invention relates to an article, such as a plate for a use in a fuel cell, which has a base onto which a coating is applied which is electrically conductive and which includes a substantially carbon material layer and at least one intermediate layer which can be a nitride, carbide, metal and metal alloy. The multilayer coating which is formed allows the protection of the article in an efficient and effective manner.
    Type: Application
    Filed: February 25, 2013
    Publication date: February 5, 2015
    Inventors: Kevin Cooke, Gunter Eitzinger, Susan Field, Hailin Sun
  • Patent number: 8940457
    Abstract: Fluid distribution plate (1) for a fuel cell assembly, comprising a first plate (11) made of an electrically conductive material impermeable to all the fluids used in a fuel cell assembly, said distribution plate having a useful section (S) which is the surface over which the gases used by the electrochemical reaction are distributed, said useful section (S) being bordered all around by a peripheral section (P), said first plate having a given thickness e1 in the peripheral section and a smaller thickness e2 in the useful section so as to form a recess from the side facing the outer face and so as to have a flat inner surface, a flexible graphite foil (11C) being applied against said first plate (11) over the entire surface of the recess, the visible face of the flexible graphite foil having a distribution channel (111) for one of the fluids, said network being formed completely in the graphite foil.
    Type: Grant
    Filed: January 8, 2008
    Date of Patent: January 27, 2015
    Assignees: Compagnie Generale des Etablissements Michelin, Michelin Recherche et Technique S.A.
    Inventors: Antonio Delfino, David Olsommer, Felix Buchi
  • Patent number: 8927176
    Abstract: Collector plates made of bulk-solidifying amorphous alloys, the bulk-solidifying amorphous alloys providing ruggedness, lightweight structure, excellent resistance to chemical and environmental effects, and low-cost manufacturing, and methods of making such collector plates from such bulk-solidifying amorphous alloys are provided.
    Type: Grant
    Filed: April 25, 2013
    Date of Patent: January 6, 2015
    Assignee: Crucible Intellectual Property, LLC
    Inventor: Trevor Wende
  • Patent number: 8921006
    Abstract: The fuel cell assembly of the present invention comprises a first fuel cell, a second fuel cell disposed adjacent to the first fuel cell, and a current collector for electrically connecting the first fuel cell and the second fuel cell. The first fuel cell and the second fuel cell are respectively furnished with an electrical generating portion for generating electricity, each of the electrical generation portion having a first electrode through the interior of which a first gas flows, a second electrode of a polarity different from the first electrode, on the exterior of which a second gas flows, and an electrolyte disposed between the first electrode and the second electrode. The current collector distributes and sources the current generated in the first fuel cell generating portion from two different locations on the first electrode on the first fuel cell to the second electrode of the second fuel cell.
    Type: Grant
    Filed: March 31, 2010
    Date of Patent: December 30, 2014
    Assignee: Toto Ltd.
    Inventors: Naoki Watanabe, Yousuke Akagi, Shuichiro Saigan, Nobuo Isaka
  • Patent number: 8906579
    Abstract: A bipolar plate to reduce electrical contact resistance between the plate and a diffusion layer used in a fuel cell. The opposing surfaces of the plate define flow channels with upstanding lands interspersed between them. The lands of the plate form an electrically-conductive contact with a diffusion layer in the fuel cell. At least a portion of the electrically-conductive contact is made up of a nickel-based alloy that reduces the contact resistance between the plate and the diffusion layer as a way to achieve improved electric current density. In one form, the alloy can be used as the primary material in the plate, while in another, it can be used as a coating deposited onto a conventional stainless steel plate.
    Type: Grant
    Filed: May 14, 2009
    Date of Patent: December 9, 2014
    Assignee: GM Global Technology Operations LLC
    Inventors: Mahmoud H. Abd Elhamid, Gayatri Vyas Dadheech, Arianna T. Morales, Maria C. Militello
  • Publication number: 20140356764
    Abstract: An amorphous carbon film contains carbon as a main component, not more than 30 at. % of hydrogen, not more than 20 at. % of nitrogen and not more than 3 at. % of oxygen (all excluding 0 at. %), and when the total amount of the carbon is taken as 100 at. %, the amount of carbon having an sp2 hybrid orbital is not less than 70 at. % and less than 100 at. %. Nitrogen and oxygen are concentrated on a surface side of the film and when detected from a surface layer by X-ray photoelectron spectroscopy, oxygen content ratio is not less than 4 at. % and not more than 15 at. % and nitrogen content ratio is not less than 10 at. % and not more than 30 at. %. The amorphous carbon film attains both electric conductivity and hydrophilicity and exhibits suitable surface characteristics to a fuel cell bipolar plate, etc.
    Type: Application
    Filed: January 25, 2013
    Publication date: December 4, 2014
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Takashi Iseki, Kazuyuki Nakanishi, Yasuhiro Ozawa, Naoki Ueda, Masafumi Koizumi
  • Patent number: 8900771
    Abstract: One embodiment of the invention includes a process including providing an electrically conductive fuel cell component having a first face, and depositing a graphitic/conductive carbon film on the first face of the electrically conductive fuel cell component comprising sputtering a graphite target using a closed field unbalanced magnetron field.
    Type: Grant
    Filed: August 17, 2006
    Date of Patent: December 2, 2014
    Assignee: GM Global Technology Operations LLC
    Inventors: Gayatri Vyas, Mahmoud H. Abd Elhamid, Youssef M. Mikhail
  • Patent number: 8889318
    Abstract: A power generating system may include a plurality of bipolar plates stacked to form a fuel cell assembly having an inlet side, a non-inlet side, an inlet header extending from the inlet side to the non-inlet side, an active area, and an inlet transition area. The inlet transition area may be in fluid communication with (i) the inlet header via feed passageways formed in each of the plates and (ii) the active area. The feed passageways of the plates located proximate to the inlet side may be generally smaller and/or fewer in number than the feed passageways of the plates located proximate to the non-inlet side such that, during operation of the fuel cell assembly, a flow velocity of gas through the active area is generally constant.
    Type: Grant
    Filed: May 11, 2010
    Date of Patent: November 18, 2014
    Assignee: Ford Global Technologies, LLC
    Inventors: Thomas Alan Wagner, Ronald David Brost, Shinichi Hirano
  • Patent number: 8852827
    Abstract: Disclosed herein is a method of manufacturing a metallic bipolar plate for fuel cells, which can maintain good corrosion resistance and contact resistance without any side effect not only initially but also after a predetermined period of time even in an environment of severe vibration as in vehicles while allowing a continuous process to provide high productivity.
    Type: Grant
    Filed: January 21, 2009
    Date of Patent: October 7, 2014
    Assignee: Hyundai Hysco
    Inventors: Yeon Soo Jeong, Yoo Taek Jeon, Jun Ho Lee, Jong Chan Park
  • Patent number: 8846270
    Abstract: A solid oxide fuel cell (SOFC) includes a plurality of sub-cells. Each sub-cell includes a first electrode in fluid communication with a source of oxygen gas, a second electrode in fluid communication with a source of a fuel gas, and a solid electrolyte between the first electrode and the second electrode. The SOFC further includes an interconnect between the sub-cells. In one embodiment, the SOFC has a first surface in contact with the first electrode of each sub-cell and a second surface that is in contact with the second electrode of each sub-cell; and the interconnect consists essentially of a doped M-titanate based perovskite, wherein M is an alkaline earth metal. In another embodiment, the interconnect includes a first layer in contact with the first electrode of each sub-cell, and a second layer in contact with the second electrode of each sub-cell. The first layer includes an electrically conductive material selected from the group consisting of an metal, a metal alloy and a mixture thereof.
    Type: Grant
    Filed: August 29, 2013
    Date of Patent: September 30, 2014
    Assignee: Saint-Gobain Ceramics & Plastics, Inc.
    Inventor: Yeshwanth Narendar
  • Patent number: 8841045
    Abstract: A method for fabricating a bi-polar plate of a fuel cell and the bi-polar plate thereof are presented. A graphite film is formed first. Next, a polymeric material added with electrically conductive powder is coated on a surface of a metal substrate. The graphite film is disposed on the polymeric material and the polymeric material is hardened to form an adhesive layer, such that the graphite film is attached on the surface of the metal substrate.
    Type: Grant
    Filed: August 30, 2013
    Date of Patent: September 23, 2014
    Assignee: Industrial Technology Reserach Institute
    Inventors: Wen-Lin Wang, Chun-Hsing Wu, Kan-Lin Hsueh, Huan-Ruei Shiu, Wen-Chen Chang, Fang-Hei Tsau, Lung-Yu Sung
  • Patent number: 8828623
    Abstract: The invention relates to a contact element for an electrically conductive connection between an anode and an interconnector of a high-temperature fuel cell. It is the object of the invention to achieve a more reliable electrically conductive connection with long-term stability between an anode and the associated interconnector of a high-temperature fuel cell. The contact element in accordance with the invention is arranged between an anode and an interconnector of a high-temperature fuel cell. It is formed with two areal electrically conductive part elements. In this respect, one respective part element is in touching contact with the anode and the other part element is in touching contact with the respective interconnector. Openings are formed in the part elements and the part elements are formed from materials having mutually different coefficients of thermal expansion.
    Type: Grant
    Filed: February 26, 2010
    Date of Patent: September 9, 2014
    Assignee: Plansee SE
    Inventors: Ulf Waeschke, Mihails Kusnezoff
  • Patent number: 8815464
    Abstract: A fuel cell includes a membrane electrode assembly and a metal separator. The metal separator is stacked with the membrane electrode assembly. A reactant gas passage is provided between the membrane electrode assembly and the metal separator to supply a reactant gas along an electrode surface. The metal separator includes a reactant gas communication hole to communicate with the reactant gas passage. The metal separator further includes a plurality of groove groups each having a plurality of grooves press-formed to allow the reactant gas communication hole to communicate with the reactant gas passage. The grooves adjacent to each other are spaced apart by a first distance. The groove groups adjacent to each other are spaced apart by a second distance larger than the first distance.
    Type: Grant
    Filed: March 7, 2012
    Date of Patent: August 26, 2014
    Assignee: Honda Motor Co., Ltd.
    Inventors: Hidetada Kojima, Masaaki Sakano, Yasuhiro Watanabe
  • Patent number: 8808940
    Abstract: This invention relates to the presence of slightly or non-porous zones in the electrode layer around gas inlets, in order to improve the leak tightness between the different individual cells making up a fuel cell with a plane geometry. The fuel cell comprises a first electrode layer having a non-porous zone forming a passage therethrough for gas flow and an electrolyte layer having a protuberance which extends into the first electrode layer for forming the non-porous zone with the non-porous zone representing a gas tight passage. Nested contact between the bipolar plate and the ceramic triple layer making up the basic cell is also described and is another possible means of avoiding mixes of gasses.
    Type: Grant
    Filed: March 18, 2005
    Date of Patent: August 19, 2014
    Assignee: Commissariat a l'Energy Atomique
    Inventors: Frédérique Cordelle, Laure Desmazes
  • Publication number: 20140227631
    Abstract: The present invention proposed manufacturing method of coating layers with good conductivity and corrosion resistance at high productivity comprising etching the oxide layer on the stainless steel substrate by plasma etching to activate the surface and prevent from decreasing it's conductivity, coating metal nitrides like CrN or TiN in nano size thickness on the etched surface and coating carbon layer at nano size thickness on top of it. According to the present invention, it is possible to produce manufacture fuel cell bipolar plate, electrode material and stainless steel with reinforced conductivity and corrosion resistance in mass.
    Type: Application
    Filed: February 9, 2013
    Publication date: August 14, 2014
    Inventors: Youngha Jun, Jaimoo Yoo, Kiho Yeo, Shin Eui Chul
  • Patent number: 8802326
    Abstract: A fuel cell stack and a bipolar plate assembly is provided that may include straight-through tunnels to transport fluids from one side of a header seal to an opposite side of a header seal, fluidly connecting fuel cell stack reactant headers and bipolar plate reactant flow channels.
    Type: Grant
    Filed: November 23, 2010
    Date of Patent: August 12, 2014
    Assignee: GM Global Technology Operations LLC
    Inventors: Steven J. Spencer, Seth D. Valentine, Courtney E. Reich, Daniel P Miller
  • Patent number: 8802330
    Abstract: The present invention provides a method for manufacturing a composite separator for a fuel cell, which can reduce the electrical contact resistance by performing an additional post-treatment to remove residual resin remaining on the surface of the composite separator by plasma etching. In certain preferred embodiments, the present invention provides a method for manufacturing a composite separator for a fuel cell, in which a liquid phase resin for gasket is applied to the surface of the composite separator along a predetermined gasket pattern, or a semi-cured resin for gasket in the form of a film with a predetermined gasket pattern is stacked on the surface of the composite separator, and then plasma etching is performed to remove the residual resin and, at the same time, cure the resin for gasket, thus reducing the overall processing time to improve the productivity and preventing a composite material of the separator from being damaged.
    Type: Grant
    Filed: September 7, 2010
    Date of Patent: August 12, 2014
    Assignees: Hyundai Motor Company, Korea Advanced Institute of Science and Technology
    Inventors: Dai Gil Lee, Ha Na Yu, Byoung Chul Kim, Bu Gi Kim, Jun Woo Lim, Jung Do Suh, Byung Ki Ahn, Sae Hoon Kim
  • Patent number: 8790848
    Abstract: In fuel cell separator, the periphery of manifold through which fuel gas, reaction water, etc., pass and the seal line being a site of bonding with an adjacent separator are provided with a resin layer. Within the surface of the separator, the resin application site on which the resin layer is formed undergoes subbing treatment in advance to thereby increase the capability of bonding with the resin. When the resin layer consists of a resin having an NH group, as the subbing treatment, hydroxide deposition treatment is carried out on the surface of the separator.
    Type: Grant
    Filed: February 22, 2007
    Date of Patent: July 29, 2014
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Yusuke Watanabe, Kazutaka Iizuka
  • Patent number: 8790845
    Abstract: One embodiment includes a substrate having a plurality of molecular chains, each chain comprising a hydrophilic group, a hydrophobic segment, and a reversible crosslinker.
    Type: Grant
    Filed: June 4, 2010
    Date of Patent: July 29, 2014
    Assignee: GM Global Technology Operations LLC
    Inventor: Tao Xie
  • Patent number: 8785078
    Abstract: The present invention provides a fuel cell which is capable of improving electric power generation efficiency at a time of high-temperature operation. The fuel cell 10 comprising: a membrane electrode assembly 4; and a pair of gas separators 7, 8 sandwiching the membrane electrode assembly 4 therebetween, wherein at least one of the gas separator(s) 7 and/or 8 comprises a compact layer(s) 7c and/or 8c which is capable of preventing permeation of fluid and a porous layer (s) 7d and/or 8d which allows permeation of fluid, and the porous layer(s) 7d and/or 8d is impregnated with a water-soluble liquid having higher boiling point than that of water.
    Type: Grant
    Filed: October 10, 2008
    Date of Patent: July 22, 2014
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Hiroko Kimura, Naoki Takehiro
  • Patent number: 8778562
    Abstract: A method of depositing a thin gold coating on bipolar plate substrates for use in fuel cells includes depositing a gold coating onto at least one surface of the bipolar plate substrate followed by annealing the gold coating at a temperature between about 200° C. to 500° C. The annealed gold coating has a reduced porosity in comparison with a coating which has not been annealed, and provides improved corrosion resistance to the underlying metal comprising the bipolar plate.
    Type: Grant
    Filed: June 11, 2012
    Date of Patent: July 15, 2014
    Assignee: GM Global Technology Operations LLC
    Inventors: Michael P. Balogh, Gayatri Vyas Dadheech, Nicholas P. Irish, Misle M. Tessema, Daniel P. Miller, Mahmoud H. Abd Elhamid